8" x 26" or 26" x 8" Cube Core Eggcrate Return Air Grille Outdoor Vent Covers + Product Description Improve your

+ Product Description Improve your HVAC system with our high-quality

+ Product Details Size – 25"w X 28"h is the size for the duct opening measurement only

+ Product Details Size – 10"w X 28"h is the size for the duct opening measurement only

Actual Filter Size – 31 3/4"w x 31 3/4" x 1"

8" x 26" or 26" x 8" Cube Core Eggcrate Return Air Grille Outdoor Vent Covers + Product Description Improve your+ Product Details Size 8" x 26" or 26" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 27. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing